Water model movement rules

It is possible to model what a single molecule of water is doing in the presence of bulk water. It is necessary to distinguish one molecule as being different, say a different color and identity within the program. The state and the movement rules are kept the same for this molecule as for the rest of the water molecules. The movement of the designated water molecule away from a reference point as a function of time is the diffusion rate. 

Recall that the rules for water molecules are the J and Pb rules, influencing the movement toward and away from each other. Their effect is to produce a dynamic system modeling liquid water. We will adopt a standard protocol for the naming of these rules since the variety increases significantly when modeling... 

---